Hypodermic dosage measuring device

• US 5,697,916 A
• Filed: 11/21/1995
• Issued: 12/16/1997
• Est. Priority Date: 11/21/1995
• Status: Expired due to Term

• Current Assignee: Stat Medical Devices Incorporated
• Original Assignee: Stat Medical Devices Incorporated
• Inventors: Schraga, Steven
• Primary Examiner(s): MENDEZ, MANUEL A
• Application Number:
  US08/561,325
• Time in Patent Office: 756 Days
• Field of Search: 604/207, 604/407, 604/403, 604/905, 604/155, 604/187, 128/DIG. 1, 141/27, 141/94
• US Class Current: 604/207
• CPC Class Codes: A61J 1/201 having one piercing end
• CPC Class Codes: A61J 1/2051 having tap means, e.g. tap means activated by sliding
• CPC Class Codes: A61J 1/2055 having gripping means
• CPC Class Codes: A61J 1/2096 Combination of a vial and a syringe for transferring or mixing their contents
• CPC Class Codes: A61M 2005/3152 including gearings to multiply or attenuate the piston displacing force
• CPC Class Codes: A61M 2205/585 having magnification means, e.g. magnifying glasses
• CPC Class Codes: A61M 5/1782 Devices aiding filling of syringes in situ combination of a vial and a syringe for transferring or mixing their contents A61J1/2096, filling of medical containers in general B65B3/003
• CPC Class Codes: A61M 5/31525 Dosing burettes, pipettes B01L3/02
• CPC Class Codes: A61M 5/31556 Accuracy improving means

Abstract

A hypodermic dosage measuring device to be utilized with a hypodermic syringe and a conventional drug vial, the dosage measuring device including a vial holding portion adapted to hold a head of the drug vial non-slidably therein, a syringe holding portion adapted to hold the syringe in a non-slidable position with a needle of the syringe disposed within the drug vial, and a dose adjustment portion, the dose adjustment portion including an elongate plunger holder and gear element, the plunger holder and gear element each including a plurality of teeth thereon such that movement of the gear element results in an elongate track segment of the plunger holder sliding in a longitudinal direction parallel to a length of the syringe. The plunger holder further including a plunger engagement segment extending perpendicularly from the proximal end of the track segment, the plunger engagement section being adapted to engage a plunger of the syringe such that longitudinal movement of the plunger holder results in corresponding longitudinal movement of the plunger of the syringe relative to a dosage holding area of the syringe. The precise dosage measure is indicated by a digital display and/or an audible indicator. A bubble detector may be provided with the hypodermic dosage measuring device, with or without the digital display and/or an audible indicator.

Claims

1. A hypodermic dosage measuring device to be utilized with a hypodermic syringe of the type including a needle, a dosage holding area, a flanged handle portion, and a plunger element slidably disposed therein, and a conventional drug vial having a body, a neck, and a head portion through which the needle is inserted into the body of the vial;

said hypodermic dosage measuring device comprising;

a vial holding portion connected to a syringe holding portion by a dose adjustment portion;

said vial holding portion comprising a recess adapted to hold the head of the drug vial non-slidably therein;

said syringe holding portion including at least one channel member for receiving a side of the flanged handle portion of the syringe non-slidably therein, and being sufficiently spaced from said vial holding portion such that the needle of the syringe is disposed within the vial upon the vial being positioned in said vial holding portion and the handle portion of the syringe being positioned in said channel member;

said dosage adjustment portion further including a plunger engagement segment, for engaging a plunger of the syringe such that longitudinal movement of said dosage adjustment portion results in corresponding longitudinal movement of the plunger of the syringe, and a gear portion;

a handle extending from and fixed to a gear element, wherein said gear element engages said gear portion to move said dosage adjustment portion in said longitudinal direction upon movement of said handle; and

a digital display on said measuring device to visually and digitally indicate an amount of drug drawn into the syringe based on a position of said handle relative to said syringe holding portion.

2. A hypodermic dosage measuring device as recited in claim 1, wherein said gear element rotates about a centrally disposed axis post;

said hypodermic measuring device further comprising;

a potentiometer substantially coaxially disposed with said gear element for outputting a signal comprising a voltage which is proportional to an amount of angular rotation of said gear element; and

a microprocessor for receiving said signal comprising a voltage outputted by said potentiometer and converting said signal comprising a voltage to a signal which is representative of a volume of fluid drawn into the syringe, said volume of fluid being proportional to said amount of angular rotation of said gear element;

wherein said microprocessor outputs said signal to said digital display.

3. A hypodermic dosage measuring device as recited in claim 1, wherein said digital display comprises a liquid crystal display.

4. A hypodermic dosage measuring device as recited in claim 1, further comprising

an audible indicator on said measuring device to audibly indicate an amount of drug drawn into the syringe based on a position of said handle relative to said syringe holding portion.

5. A hypodermic dosage measuring device as recited in claim 2, further comprising

an audible indicator on said measuring device to audibly indicate an amount of drug drawn into the syringe based on a position of said handle relative to said syringe holding portion.

6. A hypodermic dosage measuring device as recited in claim 5, wherein said audible indicator comprises:

a speaker;

an amplifier for driving said speaker; and

a voice chip for outputting signals representative of words to said amplifier;

wherein said microprocessor outputs a signal representative of a specific number which is in turn representative of a volume of fluid drawn into the syringe, said volume of fluid being proportional to said amount of angular rotation of said gear element;

wherein said voice chip outputs said signals representative of said words to said amplifier;

wherein said amplifier amplifies and outputs said signals representative of said words to said speaker; and

wherein said speaker outputs said words.

7. A hypodermic dosage measuring device as recited in claim 6, wherein said audible indicator further comprises:

an ear phone jack to enable a user to receive outputs from said audible indicator via an ear phone.

8. A hypodermic dosage measuring device as recited in claim 1, further comprising:

a bubble detector on said measuring device to detect a presence of air bubbles in said amount of drug drawn into the syringe.

9. A hypodermic dosage measuring device as recited in claim 5, further comprising:

a bubble detector on said measuring device to detect a presence of air bubbles in said amount of drug drawn into the syringe.

10. A hypodermic dosage measuring device as recited in claim 6, further comprising:

a bubble detector on said measuring device to detect a presence of air bubbles in said amount of drug drawn into the syringe;

said bubble detector comprising;

a wave transmitter positioned on said measuring device on one side of the syringe;

a wave receiver positioned opposite said wave transmitter on said metering device on a side of said syringe opposite said one side; and

a bubble detector amplifier;

wherein said wave receiver receives waves transmitted through the syringe and converts said waves to a signal representative of the contents of a medium within the syringe, and outputs said signal representative of the contents of a medium within the syringe to said bubble detector amplifier;

wherein said bubble detector amplifier amplifies and outputs said signal representative of the contents of a medium within the syringe to said microprocessor;

wherein said microprocessor analyzes said amplified signal and outputs a signal to said speaker to sound an alarm when said microprocessor determines the presence of bubbles.

11. A hypodermic dosage measuring device as recited in claim 2, further comprising:

a bubble detector on said measuring device to detect a presence of air bubbles in said amount of drug drawn into the syringe;

said bubble detector comprising;

a wave transmitter positioned on said measuring device on one side of the syringe;

a wave receiver positioned opposite said wave transmitter on said metering device on a side of said syringe opposite said one side; and

a bubble detector amplifier;

wherein said wave receiver receives waves transmitted through the syringe and converts said waves to a signal representative of the contents of a medium within the syringe, and outputs said signal representative of the contents of a medium within the syringe to said bubble detector amplifier;

wherein said bubble detector amplifier amplifies and outputs said signal representative of the contents of a medium within the syringe to said microprocessor;

wherein said microprocessor analyzes said amplified signal and outputs a signal to said digital display to digitally indicate the presence or absence of bubbles.

12. A hypodermic dosage measuring device as recited in claim 8, wherein said bubble detector comprises:

an infrared light emitter positioned on one side of the syringe; and

an infrared receiver positioned on a side of the syringe opposite said one side;

wherein said infrared receiver receives infrared light transmitted through the syringe and outputs a signal indicative of the presence or absence of bubbles in the medium contained in the syringe.

13. A hypodermic dosage measuring device as recited in claim 10, wherein said wave transmitter comprises an infrared light transmitter, and said wave receiver comprises an infrared light receiver and transducer.

14. A hypodermic dosage measuring device as recited in claim 13, wherein said infrared light transmitter comprises at least one light emitting diode.

15. A hypodermic dosage measuring device as recited in claim 1, further comprising:

a potentiometer disposed on said dosage adjustment portion so that a portion of said potentiometer is longitudinally moved with said longitudinal movement of said dosage adjustment portion;

wherein said potentiometer outputs a signal comprising a voltage which is proportional to an amount of longitudinal movement of said dosage adjustment portion; and

a microprocessor for receiving said signal comprising a voltage outputted by said potentiometer and converting said signal comprising a voltage to a signal which is representative of a volume of fluid drawn into the syringe, said volume of fluid being proportional to said amount of longitudinal movement of said dosage adjustment portion;

wherein said microprocessor outputs said signal to said digital display.

16. A hypodermic dosage measuring device as recited in claim 1, wherein a position of said handle relative to said syringe holding portion visually indicates a relative position of said plunger engagement segment with respect to said vial holding portion.

17. A hypodermic dosage measuring device to be utilized with a hypodermic syringe of the type including a needle, a dosage holding area, a flanged handle portion, and a plunger element slidably disposed therein, and a conventional drug vial having a body, a neck, and a head portion through which the needle is inserted into the body of the vial;

said hypodermic dosage measuring device comprising;

a vial holding portion connected to a syringe holding portion by a dose adjustment portion;

said vial holding portion comprising a recess adapted to hold the head of the drug vial non-slidably therein;

said syringe holding portion including at least one channel member for receiving a side of the flanged handle portion of the syringe non-slidably therein, and being sufficiently spaced from said vial holding portion such that the needle of the syringe is disposed within the vial upon the vial being positioned in said vial holding portion and the handle portion of the syringe being positioned in said channel member;

said dosage adjustment portion further including a plunger engagement segment, for engaging a plunger of the syringe such that longitudinal movement of said dosage adjustment portion results in corresponding longitudinal movement of the plunger of the syringe, and a gear portion;

a handle extending from and fixed to a gear element, wherein said gear element engages said gear portion to move said dosage adjustment portion in said longitudinal direction upon movement of said handle; and

an audible indicator on said measuring device to audibly indicate an amount of drug drawn into the syringe based on a position of said handle relative to said syringe holding portion.

18. A hypodermic dosage measuring device as recited in claim 17, further comprising:

a potentiometer coaxially disposed with said gear element for outputting a signal comprising a voltage which is proportional to an amount of angular rotation of said gear element; and

a microprocessor for receiving said signal comprising a voltage outputted by said potentiometer and converting said signal comprising a voltage to a signal which is representative of a specific number which is in turn representative of a volume of fluid drawn into the syringe, said volume of fluid being proportional to said amount of angular rotation of said gear element;

wherein said audible indicator further comprises;

a speaker;

an amplifier for driving said speaker; and

a voice chip for receiving said signals from said microprocessor and outputting signals representative of words to said amplifier;

wherein said voice chip outputs said signals representative of said words to said amplifier;

wherein said amplifier amplifies and outputs said signals representative of said words to said speaker; and

wherein said speaker outputs said words.

19. A hypodermic dosage measuring device as recited in claim 18, wherein said audible indicator further comprises:

an ear phone jack to enable a user to receive outputs from said audible indicator via an ear phone.

20. A hypodermic dosage measuring device as recited in claim 17, further comprising:

a bubble detector on said measuring device to detect a presence of air bubbles in said amount of drug drawn into the syringe.

21. A hypodermic dosage measuring device as recited in claim 18, further comprising:

a bubble detector on said measuring device to detect a presence of air bubbles in said amount of drug drawn into the syringe.

22. A hypodermic dosage measuring device as recited in claim 21, wherein said bubble detector further comprises:

a wave transmitter positioned on said measuring device on one side of the syringe;

a wave receiver positioned opposite said wave transmitter on said metering device on a side of said syringe opposite said one side; and

a bubble detector amplifier;

wherein said wave receiver receives waves transmitted through the syringe and converts said waves to a signal representative of the contents of a medium within the syringe, and outputs said signal representative of the contents of a medium within the syringe to said bubble detector amplifier;

wherein said bubble detector amplifier amplifies and outputs said signal representative of the contents of a medium within the syringe to said microprocessor;

wherein said microprocessor analyzes said amplified signal and outputs a signal to said speaker to sound an alarm when said microprocessor determines the presence of bubbles.

23. A hypodermic dosage measuring device as recited in claim 22, wherein said microprocessor outputs a signal to said speaker to sound an audible tone distinct from said alarm when said microprocessor determines the absence of bubbles.

24. A hypodermic dosage measuring device as recited in claim 17, wherein a position of said handle relative to said syringe holding portion visually indicates a relative position of said plunger engagement segment with respect to said vial holding portion.

25. A hypodermic dosage measuring device to be utilized with a hypodermic syringe of the type including a needle, a dosage holding area, a flanged handle portion, and a plunger element slidably disposed therein, and a conventional drug vial having a body, a neck, and a head portion through which the needle is inserted into the body of the vial;

said hypodermic dosage measuring device comprising;

a vial holding portion connected to a syringe holding portion by a dose adjustment portion;

said vial holding portion comprising a recess adapted to hold the head of the drug vial non-slidably therein;

said syringe holding portion including at least one channel member for receiving a side of the flanged handle portion of the syringe non-slidably therein, and being sufficiently spaced from said vial holding portion such that the needle of the syringe is disposed within the vial upon the vial being positioned in said vial holding portion and the handle portion of the syringe being positioned in said channel member;

said dosage adjustment portion further including a plunger engagement segment, for engaging a plunger of the syringe such that longitudinal movement of said dosage adjustment portion results in corresponding longitudinal movement of the plunger of the syringe, and a gear portion;

a handle extending from and fixed to a gear element, wherein said gear element engages said gear portion to move said dosage adjustment portion in said longitudinal direction upon movement of said handle; and

a bubble detector on said measuring device to detect a presence of air bubbles in said amount of drug drawn into the syringe.

26. A hypodermic dosage measuring device as recited in claim 25, further comprising:

a microprocessor contained within said device; and

a speaker mounted to said device;

wherein said bubble detector further comprises;

a wave transmitter positioned on said measuring device on one side of the syringe;

a wave receiver positioned opposite said wave transmitter on said metering device on a side of said syringe opposite said one side; and

a bubble detector amplifier;

wherein said wave receiver receives waves transmitted through the syringe and converts said waves to a signal representative of the contents of a medium within the syringe, and outputs said signal representative of the contents of a medium within the syringe to said bubble detector amplifier;

wherein said bubble detector amplifier amplifies and outputs said signal representative of the contents of a medium within the syringe to said microprocessor;

wherein said microprocessor analyzes said amplified signal and outputs a signal to said speaker to sound an alarm when said microprocessor determines the presence of bubbles.

27. A hypodermic dosage measuring device as recited in claim 26, wherein said microprocessor outputs a signal to said speaker to sound an audible tone distinct from said alarm when said microprocessor determines the absence of bubbles.

28. A hypodermic dosage measuring device as recited in claim 25, further comprising:

a microprocessor contained within said device; and

a digital display;

wherein said bubble detector further comprises;

a wave transmitter positioned on said measuring device on one side of the syringe;

a wave receiver positioned opposite said wave transmitter on said metering device on a side of said syringe opposite said one side; and

a bubble detector amplifier;

wherein said wave receiver receives waves transmitted through the syringe and converts said waves to a signal representative of the contents of a medium within the syringe, and outputs said signal representative of the contents of a medium within the syringe to said bubble detector amplifier;

wherein said bubble detector amplifier amplifies and outputs said signal representative of the contents of a medium within the syringe to said microprocessor;

wherein said microprocessor analyzes said amplified signal and outputs a signal to said digital display to digitally and visually indicate the presence or absence of bubbles.

29. A hypodermic dosage measuring device as recited in claim 26, wherein wave transmitter comprises an infrared light emitter;

and

wherein said wave receiver comprises an infrared receiver and transducer.

30. A hypodermic dosage measuring device as recited in claim 28, wherein wave transmitter comprises an infrared light emitter;

and

wherein said wave receiver comprises an infrared receiver and transducer.